Altered platelet activating factor metabolism in insulin dependent diabetes mellitus. 1995

R A Memon, and S A Saeed, and A Jabbar, and A Jafri, and A H Gilani, and S Saleem, and H Akbani
Department of Pharmacology, Faculty of Health Sciences, Aga Khan University, Karachi.

Diabetes mellitus is associated with several abnormalities of platelet function. Recent studies have shown that the blood level of platelet activating factor (PAF), a potent inducer of platelet aggregation, is elevated in insulin dependent diabetes mellitus (IDDM) and remains unchanged in non-insulin dependent diabetes mellitus (NIDDM) patients. However, the mechanism of this increase in PAF levels has not been determined. In this study we have measured the activity of plasma PAF acetylhydrolase (an enzyme that regulates PAF levels) and lipoprotein levels in control subjects and diabetic patients. The data presented show that plasma PAF acetylhydrolase activity is significantly decreased in IDDM and is not altered in NIDDM patients. The lipoprotein levels were similar in control and diabetic subjects and there was no correlation between lipoprotein levels and PAF acetylhydrolase activity. These results suggest that the elevated levels of PAF in IDDM patients could be due to a decrease in plasma PAF acetylhydrolase activity.

UI MeSH Term Description Entries
D008074 Lipoproteins Lipid-protein complexes involved in the transportation and metabolism of lipids in the body. They are spherical particles consisting of a hydrophobic core of TRIGLYCERIDES and CHOLESTEROL ESTERS surrounded by a layer of hydrophilic free CHOLESTEROL; PHOSPHOLIPIDS; and APOLIPOPROTEINS. Lipoproteins are classified by their varying buoyant density and sizes. Circulating Lipoproteins,Lipoprotein,Lipoproteins, Circulating
D010741 Phospholipases A Phospholipases that hydrolyze one of the acyl groups of phosphoglycerides or glycerophosphatidates.
D010972 Platelet Activating Factor A phospholipid derivative formed by PLATELETS; BASOPHILS; NEUTROPHILS; MONOCYTES; and MACROPHAGES. It is a potent platelet aggregating agent and inducer of systemic anaphylactic symptoms, including HYPOTENSION; THROMBOCYTOPENIA; NEUTROPENIA; and BRONCHOCONSTRICTION. AGEPC,Acetyl Glyceryl Ether Phosphorylcholine,PAF-Acether,Phosphorylcholine, Acetyl Glyceryl Ether,1-Alkyl-2-acetyl-sn-glycerophosphocholine,Platelet Aggregating Factor,Platelet Aggregation Enhancing Factor,Platelet-Activating Substance,Thrombocyte Aggregating Activity,1 Alkyl 2 acetyl sn glycerophosphocholine,Aggregating Factor, Platelet,Factor, Platelet Activating,PAF Acether,Platelet Activating Substance
D003922 Diabetes Mellitus, Type 1 A subtype of DIABETES MELLITUS that is characterized by INSULIN deficiency. It is manifested by the sudden onset of severe HYPERGLYCEMIA, rapid progression to DIABETIC KETOACIDOSIS, and DEATH unless treated with insulin. The disease may occur at any age, but is most common in childhood or adolescence. Diabetes Mellitus, Brittle,Diabetes Mellitus, Insulin-Dependent,Diabetes Mellitus, Juvenile-Onset,Diabetes Mellitus, Ketosis-Prone,Diabetes Mellitus, Sudden-Onset,Diabetes, Autoimmune,IDDM,Autoimmune Diabetes,Diabetes Mellitus, Insulin-Dependent, 1,Diabetes Mellitus, Type I,Insulin-Dependent Diabetes Mellitus 1,Juvenile-Onset Diabetes,Type 1 Diabetes,Type 1 Diabetes Mellitus,Brittle Diabetes Mellitus,Diabetes Mellitus, Insulin Dependent,Diabetes Mellitus, Juvenile Onset,Diabetes Mellitus, Ketosis Prone,Diabetes Mellitus, Sudden Onset,Diabetes, Juvenile-Onset,Diabetes, Type 1,Insulin Dependent Diabetes Mellitus 1,Insulin-Dependent Diabetes Mellitus,Juvenile Onset Diabetes,Juvenile-Onset Diabetes Mellitus,Ketosis-Prone Diabetes Mellitus,Sudden-Onset Diabetes Mellitus
D003924 Diabetes Mellitus, Type 2 A subclass of DIABETES MELLITUS that is not INSULIN-responsive or dependent (NIDDM). It is characterized initially by INSULIN RESISTANCE and HYPERINSULINEMIA; and eventually by GLUCOSE INTOLERANCE; HYPERGLYCEMIA; and overt diabetes. Type II diabetes mellitus is no longer considered a disease exclusively found in adults. Patients seldom develop KETOSIS but often exhibit OBESITY. Diabetes Mellitus, Adult-Onset,Diabetes Mellitus, Ketosis-Resistant,Diabetes Mellitus, Maturity-Onset,Diabetes Mellitus, Non-Insulin-Dependent,Diabetes Mellitus, Slow-Onset,Diabetes Mellitus, Stable,MODY,Maturity-Onset Diabetes Mellitus,NIDDM,Diabetes Mellitus, Non Insulin Dependent,Diabetes Mellitus, Noninsulin Dependent,Diabetes Mellitus, Noninsulin-Dependent,Diabetes Mellitus, Type II,Maturity-Onset Diabetes,Noninsulin-Dependent Diabetes Mellitus,Type 2 Diabetes,Type 2 Diabetes Mellitus,Adult-Onset Diabetes Mellitus,Diabetes Mellitus, Adult Onset,Diabetes Mellitus, Ketosis Resistant,Diabetes Mellitus, Maturity Onset,Diabetes Mellitus, Slow Onset,Diabetes, Maturity-Onset,Diabetes, Type 2,Ketosis-Resistant Diabetes Mellitus,Maturity Onset Diabetes,Maturity Onset Diabetes Mellitus,Non-Insulin-Dependent Diabetes Mellitus,Noninsulin Dependent Diabetes Mellitus,Slow-Onset Diabetes Mellitus,Stable Diabetes Mellitus
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D043203 1-Alkyl-2-acetylglycerophosphocholine Esterase A lipoprotein-associated PHOSPHOLIPASE A2 which modulates the action of PLATELET ACTIVATING FACTOR by hydrolyzing the SN-2 ester bond to yield the biologically inactive lyso-platelet-activating factor. It has specificity for phospholipid substrates with short-chain residues at the SN-2 position, but inactive against long-chain phospholipids. Deficiency in this enzyme is associated with many diseases including ASTHMA, and HYPERCHOLESTEROLEMIA. PAF Acetylhydrolase,Platelet-Activating Factor Hydrolase,Lipoprotein-Associated Phospholipase A(2),Lipoprotein-Associated Phospholipase A2,Lp-PLA(2),Lp-PLA2,PAF 2-Acetylhydrolase,PAF 2-Acylhydrolase,PAF Acetylhydrolase II,Platelet-activating Factor Acetylhydrolase IB,1 Alkyl 2 acetylglycerophosphocholine Esterase,2-Acetylhydrolase, PAF,Acetylhydrolase II, PAF,Acetylhydrolase, PAF,Esterase, 1-Alkyl-2-acetylglycerophosphocholine,Factor Hydrolase, Platelet-Activating,Hydrolase, Platelet-Activating Factor,Lipoprotein Associated Phospholipase A2,Lp PLA2,PAF 2 Acetylhydrolase,PAF 2 Acylhydrolase,Phospholipase A2, Lipoprotein-Associated,Platelet Activating Factor Hydrolase,Platelet activating Factor Acetylhydrolase IB

Related Publications

R A Memon, and S A Saeed, and A Jabbar, and A Jafri, and A H Gilani, and S Saleem, and H Akbani
May 1999, Prostaglandins & other lipid mediators,
R A Memon, and S A Saeed, and A Jabbar, and A Jafri, and A H Gilani, and S Saleem, and H Akbani
December 1994, Thrombosis research,
R A Memon, and S A Saeed, and A Jabbar, and A Jafri, and A H Gilani, and S Saleem, and H Akbani
May 1992, Metabolism: clinical and experimental,
R A Memon, and S A Saeed, and A Jabbar, and A Jafri, and A H Gilani, and S Saleem, and H Akbani
January 2002, Journal of cellular and molecular medicine,
R A Memon, and S A Saeed, and A Jabbar, and A Jafri, and A H Gilani, and S Saleem, and H Akbani
July 1995, Thrombosis research,
R A Memon, and S A Saeed, and A Jabbar, and A Jafri, and A H Gilani, and S Saleem, and H Akbani
February 1998, The Journal of nutrition,
R A Memon, and S A Saeed, and A Jabbar, and A Jafri, and A H Gilani, and S Saleem, and H Akbani
July 2001, Clinica chimica acta; international journal of clinical chemistry,
R A Memon, and S A Saeed, and A Jabbar, and A Jafri, and A H Gilani, and S Saleem, and H Akbani
March 1985, Experientia,
R A Memon, and S A Saeed, and A Jabbar, and A Jafri, and A H Gilani, and S Saleem, and H Akbani
January 1983, Metabolic bone disease & related research,
R A Memon, and S A Saeed, and A Jabbar, and A Jafri, and A H Gilani, and S Saleem, and H Akbani
September 1992, The New England journal of medicine,
Copied contents to your clipboard!